More on the frequency dependence of target strength of mature herring

dc.contributor.author	Foote, Kenneth G.
dc.contributor.author	Hansen, Kaare A.
dc.contributor.author	Ona, Egil
dc.date.accessioned	2012-09-06T06:27:11Z
dc.date.available	2012-09-06T06:27:11Z
dc.date.issued	1993
dc.identifier.citation	This report is not to be cited without prior reference to the authors	no_NO
dc.identifier.uri	http://hdl.handle.net/11250/105139
dc.description.abstract	The hibernating stock of Norwegian spring-spawning herring has been acoustically surveyed in a fjord system in northern Norway in December 1992. The survey frequencies are 18, 38, 120, and 200 kHz. When the corresponding echo sounders were operating, the fundmental measurements of volume backscattering strength were simultaneous. By comparing integrated measures of these, the several backscattering cross sections are related. New results are compared with those obtained from a cruise in the same area in December 1991, when the same herring stock was observed.	no_NO
dc.language.iso	eng	no_NO
dc.publisher	ICES	no_NO
dc.relation.ispartofseries	ICES CM Documents;1993/B:30
dc.subject	acoustics	no_NO
dc.subject	akustikk	no_NO
dc.subject	gear experiments	no_NO
dc.subject	redskapsforsøk	no_NO
dc.title	More on the frequency dependence of target strength of mature herring	no_NO
dc.type	Working paper	no_NO
dc.subject.nsi	VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924	no_NO
dc.source.pagenumber	8 s.	no_NO